Abstract—Power pads for charging batteries of electric vehicles in the garage have been in existence for many years but they have not solved the problems facing the users. Electric vehicles stop anywhere on the road as soon as the energy stored in the batteries is exhausted. Stationary charging systems are common and usually located at designated charging stations. To overcome the problems associated with the stationary charging system especially in developing countries, we propose the design of power pad for dynamic battery charging system. This model employs wireless power transfer mechanism, utilizing high quality magnetic resonance. The work leverages on the ability of energy to be transferred efficiently between two magnetically coupled resonating coils in a complex electromagnetic environment. A prototype of the dynamic battery charging system was designed and constructed. Index Terms— Electric vehicles, magnetic resonance, power pad, wireless power transfer I. INTRODUCTION HE notion of wireless power transfer for charging of electric vehicles dates back to 19th century through the concept of power distribution for wireless bulbs [1]. Power pads for wireless charging of electric vehicles (EVs) were made possible with the aid of wireless power transfer (WPT) technology. This technology tackles challenges of power pad for charging of electric vehicles which was a major impediment for owners of EVs. The technology for wireless charging can either be magnetic induction or radio frequency, through either stationary or dynamic wireless power transfer system; where magnetic induction powers the charging pads which transform electrical energy to magnetic energy and enables transmission over an air gap, typically short to mid-range. In the case of radio frequency (or microwave), the parabolic dish focuses on the radio waves which are normally long range waves towards intended target. In a stationary wireless power transfer (SWPT) method, drivers could park their cars and leave, but for the dynamic method, the EV is powered while driving, and the driver could change lane when vehicle is fully charged. This is referred to as dynamic wireless power transfer (DWPT). Manuscript accepted: February 04, 2019. S. Orike is a Senior Lecturer and Head, Department of Computer Engineering, Rivers State University, Port Harcourt, Nigeria (e-mail: orike.sunny@ ust.edu.ng). S. O. Alase was an M.Tech Student in the Department of Electrical Engineering, Rivers State University, Port Harcourt, Nigeria. He is now a Lecturer at the Department of Electrical Engineering, Captain Elechi Amadi Polytechnic, Port Harcourt (e-mail: alaseolusegun4@gmail.com). Wireless power transfer technology adopts both Faraday’s and Ampere’s laws as magnetic field induces a voltage in receiver coil, and current in transmitter coil can develop the capacity to produce magnetic field or magnetic induction which could be viewed in two categories: Magnetic Induction Coupling (MIC) and Magnetic Resonance Coupling (MRC). In MIC, the source drives primary coil resulting to a sinusoidal magnetic field which induces voltage across terminals of secondary coil which transfers power to the load [2]. The type of mechanism is used in transformer where the magnetic field is confined to a high permeability core. MRC has an extended range alignment insensitivity and potential to support multiple receivers than MIC. Oil reserves are not unlimited, but they are so necessary to find supplementary energy sources [3]. This has become compulsory and urgent due to the fact that the burning of oil in the Niger Delta region of Nigeria and all other oil producing countries provides a negative environmental impact like huge carbon emission and other harmful gas emissions. Transportation sector is the largest consumer of fossil fuel worldwide and thus an important factor in reducing fossil fuel demand. Pollutant emissions and oil consumption are mostly caused by transportation sector. It is therefore necessary to combat this unpleasant situation in order to save energy and preserve the environment as well. In order to stand against environmental pollution, EVs were conceived. But the high flexibility makes it difficult to get power in a similar way electric trains that run on a fixed track do. Instead, a high power and large capacity battery pack is usually equipped as an energy storage unit to make an EV to operate for a satisfactory distance. This paper contributes an effort to make wireless power pads for EVs future plan for dynamic charging systems. It is therefore our proposal for DWPT systems to be designed, manufactured and installed locally in developing countries. This will save cost and increase customer demands for the vehicles. It will also alert governments and stakeholders to take drastic steps to adjust the economy in the realities of falling oil prices, and also to save the environment from toxic pollutions. The major challenges are: electricity storage technology (in situation of epileptic power supply), insufficient energy density, limited life time and high cost. The remainder of this paper is organized as follows: Section II provides a background study of the work; Section III describes the materials and method used in the work; Dynamic Wireless Power Transfer in Electric Vehicles using Magnetic Resonance: A Case of Developing Countries Sunny Orike, Member, IAENG and Samuel O. Alase T Proceedings of the World Congress on Engineering 2019 WCE 2019, July 3-5, 2019, London, U.K. ISBN: 978-988-14048-6-2 ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online) WCE 2019